app/webrtc/java/src/org/webrtc/Logging.java

/*
 * libjingle
 * Copyright 2013, Google Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.webrtc;

import java.util.EnumSet;

/** Java wrapper for WebRTC & libjingle logging. */
public class Logging {
  static {
    System.loadLibrary("jingle_peerconnection_so");
  }

  // Keep in sync with webrtc/common_types.h:TraceLevel.
  public enum TraceLevel {
    TRACE_NONE(0x0000),
    TRACE_STATEINFO(0x0001),
    TRACE_WARNING(0x0002),
    TRACE_ERROR(0x0004),
    TRACE_CRITICAL(0x0008),
    TRACE_APICALL(0x0010),
    TRACE_DEFAULT(0x00ff),
    TRACE_MODULECALL(0x0020),
    TRACE_MEMORY(0x0100),
    TRACE_TIMER(0x0200),
    TRACE_STREAM(0x0400),
    TRACE_DEBUG(0x0800),
    TRACE_INFO(0x1000),
    TRACE_TERSEINFO(0x2000),
    TRACE_ALL(0xffff);

    public final int level;
    TraceLevel(int level) {
      this.level = level;
    }
  };

  // Keep in sync with talk/base/logging.h:LoggingSeverity.
  public enum Severity {
    LS_SENSITIVE, LS_VERBOSE, LS_INFO, LS_WARNING, LS_ERROR,
  };


  // Enable tracing to |path| of messages of |levels| and |severity|.
  // On Android, use "logcat:" for |path| to send output there.
  public static void enableTracing(
      String path, EnumSet<TraceLevel> levels, Severity severity) {
    int nativeLevel = 0;
    for (TraceLevel level : levels) {
      nativeLevel |= level.level;
    }
    nativeEnableTracing(path, nativeLevel, severity.ordinal());
  }

  private static native void nativeEnableTracing(
      String path, int nativeLevels, int nativeSeverity);
}